80 lines
3.5 KiB
C
80 lines
3.5 KiB
C
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// ----------------------------------------------------------------------------
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// - Open3D: www.open3d.org -
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// ----------------------------------------------------------------------------
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// Copyright (c) 2018-2023 www.open3d.org
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// SPDX-License-Identifier: MIT
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// ----------------------------------------------------------------------------
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#pragma once
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#include <cstdint>
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#include <string>
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#include <vector>
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#include "open3d/visualization/gui/Gui.h"
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namespace open3d {
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namespace visualization {
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namespace gui {
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class FontDescription {
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public:
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constexpr static const char *SANS_SERIF = "sans-serif";
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constexpr static const char *MONOSPACE = "monospace";
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/// Creates a font description. This must be passed to
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/// Application::AddFont() before the window is created.
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/// \param typeface A path to a TrueType (.ttf), TrueType Collection (.ttc),
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/// or OpenType (.otf) file, or it is the name of the font,
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/// in which case the system font paths will be searched
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/// to find the font file. This typeface will be used for
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/// roman characters (Extended Latin, that is, European
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/// languages).
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/// \param style Ignored if typeface is a file, but will be used to qualify
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/// the font if a system font name is used. Will be applied to
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/// any additional language or code point typefaces.
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/// \param point_size The point size (NOT pixel size) of the font. Will be
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/// applied to any additional language or code point
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/// typefaces. A size of 0 indicates the default size.
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explicit FontDescription(const char *typeface,
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FontStyle style = FontStyle::NORMAL,
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int point_size = 0);
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/// Adds code points outside Extended Latin from the specified typeface.
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/// Supported languages are:
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/// "en" (English) [this was already added in the constructor]
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/// "ja" (Japanese)
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/// "ko" (Korean)
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/// "th" (Thai)
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/// "vi" (Vietnamese)
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/// "zh" (Chinese, 2500 most common characters, 50 MB per window)
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/// "zh_all" (Chinese, all characters, ~200 MB per window)
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/// All other languages will be assumed to be Cyrillic.
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/// Note that generally fonts do not have CJK glyphs unless they are
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/// specifically a CJK font, although operating systems generally use a
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/// CJK font for you. We do not have the information necessary to do this,
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/// so you will need to provide a font that has the glyphs you need.
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/// In particular, common fonts like "Arial", "Helvetica", and SANS_SERIF
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/// do not contain CJK glyphs.
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void AddTypefaceForLanguage(const char *typeface, const char *lang);
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/// Adds specific code points from the typeface. This is useful for
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/// selectively adding glyphs, for example, from an icon font.
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void AddTypefaceForCodePoints(const char *typeface,
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const std::vector<uint32_t> &code_points);
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public: // for internal use, use functions above to set
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struct CPRange {
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std::string path;
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std::string lang;
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std::vector<uint32_t> code_points; // empty if lang is not ""
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};
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std::vector<CPRange> ranges_;
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FontStyle style_;
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int point_size_;
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};
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} // namespace gui
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} // namespace visualization
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} // namespace open3d
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